FIG. 6.

Induction of IFN-α by cell cultures producing homologous or chimeric pseudoparticles of TGEV and BCV. The experiments were performed as described in the legend to Fig. 1. The coexpressed genes are indicated as uppercase letters on the x axis for M constructs and by lowercase letters for E constructs. For panel b, an antibody specific for the ectodomain of TGEV M protein was added in the culture medium during the incubation with PBM cells.